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| Santos,Kleber Renan de Souza; Sant'anna,Célia Leite. |
| Diante da importância ecológica das cianobactérias e da escassez de informações mais detalhadas sobre estes organismos nos diversos sistemas aquáticos do Pantanal brasileiro, o objetivo deste trabalho foi estudar a flora de cianobactérias de três lagoas do Pantanal da Nhecolândia. As lagoas estudadas são corpos d'água naturais, rasos (profundidade máxima 1,1 m), aproximadamente circulares e apresentam características limnológicas distintas. As amostras foram coletadas em períodos de seca e de cheia, entre 2004 e 2007. Foram identificadas 21 espécies de cianobactérias, com predominância da ordem Oscillatoriales (24% do total de espécies), seguida das ordens Synechococcales, Pseudanabaenales, Chroococcales e Nostocales, cada uma contribuindo com 19%. A lagoa... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversidade; Cianobactérias; Lagoas; Pantanal. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000100007 |
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| Gama Junior,Watson Arantes; Azevedo,Maria Teresa de Paiva; Komárková-Legnerová,Jaroslava; Sant'anna,Célia Leite. |
| The Brazilian Atlantic Rainforest is a highly heterogeneous ecosystem comprising large numbers of tropical and subtropical habitats favorable to the development of cyanobacteria. Studies on cyanobacteria in this ecosystem are still rare, however, especially those involving unicellular and colonial types. The high biodiversity and endemism of this biome has been extremely impacted and fragmented, and less than 10% of its original vegetation cover remains today. We describe here a new species of a colonial cyanobacteria, Lemmermanniella terrestris, found on dry soils in a subtropical region of the Atlantic Rainforest in the municipality of Cananéia in southern São Paulo State, Brazil. This new taxon demonstrated all of the diacritical features of the genus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chroococcales; Lemmermanniella terrestris; Terrestrial habitat. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000400005 |
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| Werner,Vera Regina; Sant'anna,Célia Leite; Azevedo,Maria Teresa de Paiva. |
| The paper proposed Cyanoaggregatum brasiliense, a new genus and species from the plankton of a subtropical brackish coastal lagoon from Rio Grande do Sul State, South Brazil. It differs from all other members of Chroococcales by its characteristic arrangement of cells in irregular groups distributed in a single, flat or slightly curved layer, on irregular rows, slightly distant from each other, forming a mosaic-like pattern slightly below the surface of the mucilaginous colonial envelope. The cell division in one plane perpendicular to the long axis and the lack of pseudo-filaments indicate its classification in the family Synechococcaceae, sub-family Aphanothecoideae. The general characteristics, the diagnostic criteria and the taxonomic position are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal lagoon; Cyanoaggregatum brasiliense; Cyanobacteria; New genus and species; Southern Brazil. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000300012 |
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